KR20190011512A - Wireless power reception device with heterogeneous antenna - Google Patents

Abstract

The present invention relates to a wireless power charging device with a heterogeneous antenna comprising: a first antenna provided in a mounting unit of a first base; and a second antenna provided in an edge unit of the first base. The first antenna and the second antenna are located at the same level, so a separate space for providing the second antenna on an upper part of the first base is not required. Therefore, an entire size can be reduced.

Description

TECHNICAL FIELD [0001] The present invention relates to a wireless power charging apparatus having a heterogeneous antenna,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wireless power charging apparatus having different types of antennas, and more particularly, to a wireless power charging apparatus having different types of antennas such that a first antenna and a second antenna are positioned at the same level, And a charging device.

In general, mobile devices such as mobile phones, smart phones, and smart watches use batteries that are mainly chargeable to receive power for operation. Such a battery is gradually consumed over time, and frequent battery charging is one of the inconveniences of using the portable device. As a solution to such a problem, a technique for conveniently charging a mobile device using a wireless charging technology is being developed.

Most of these wireless charging technologies are using magnetic induction technology. Wireless power consortium (WPC) and Power matters alliance (PMA) have already set standards for each group and have completed all the interoperability test certification of products to produce various products centering on member companies.

In recent years, many researches are being actively carried out in the development of products using magnetic resonance technology that can solve the problems of the conventional magnetic induction technology. A representative technology standard organization is Alliance for wireless power (A4WP). Although self-resonance technology is basically based on magnetic induction between two coils, it is possible to fabricate a system with hundreds or more quality factors using a frequency of several MHz even in a small device such as a mobile device. When using a magnetic resonator with a high quality factor, it is possible to simultaneously charge a plurality of loads through a single transmitter and also to increase the effective wireless power transmission distance.

1 is a view illustrating a conventional wireless power charging apparatus. Referring to FIG. 1, the conventional wireless power charging apparatus is configured such that the coils are disposed at positions overlapping on different layers, so that a wireless charging function and a short-range wireless communication function can be implemented in one device. The first coil 12 is disposed on the circuit board 10 and the second coil 22 is disposed on the support member 20. The first coil 12 is disposed on the circuit board 10, . The first coil 12 is configured to generate a wireless induction magnetic field and the second coil 22 is configured to perform Near Field Communication (NFC) with an external device. A shielding plate 30 is provided between the circuit board 10 and the support member 20.

For example, the conventional wireless power transmission apparatus is installed in a vehicle interior, wirelessly charges the portable terminal through the first coil 12, transmits the contents stored in the portable terminal to the vehicle's media device via the second coil 22 .

However, in the conventional wireless power transmission apparatus, since the support member 20 is disposed on the circuit board 10, a separate space is required for the support member 20 to be positioned on the circuit board 10, Is increased.

Korean Patent Publication No. 10-2015-0051922

SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a wireless power charging apparatus having different types of antennas so that the first antenna and the second antenna are positioned at the same level, .

The first antenna and the second antenna are separated from each other by the partition wall so that the magnetic field of the first antenna does not interfere with the second antenna and the magnetic field of the second antenna does not interfere with the first antenna, And to provide a wireless power charging apparatus having different types of antennas for improving the performance of the first and second antennas.

It is another object of the present invention to provide a wireless power charging apparatus having different types of antennas for efficiently improving the structure of the first antenna and wirelessly charging the portable terminal in the vehicle at high speed.

According to an aspect of the present invention, there is provided an antenna comprising: a first antenna having a frequency band; A first base having a seating part for seating the first antenna on an upper surface thereof; A second base formed along an upper surface of the first base so as not to overlap with the seating portion; And a second antenna formed to be wound along the second base and having a frequency band different from that of the first antenna.

The present invention further provides a wireless power charging apparatus having a heterogeneous antenna, further comprising a shield plate disposed between the seating portion and the first antenna.

The upper surface of the first base includes the seating portion and a rim portion provided along the rim of the seating portion. The second base is formed along the rim portion, and the exposed portion is exposed at the center thereof. Wherein the shield plate is seated on the seating portion through the exposure hole, and the first antenna is disposed on the seating portion, wherein the first antenna is disposed on the seating portion.

 The first base may further include a partition wall protruding between the seating portion and the rim.

 In addition, the barrier rib is formed along the rim of the seating part, and is formed to protrude upward from the shielding plate.

 In addition, the partition wall is formed to protrude above the first antenna and the second antenna.

The upper surface of the first base includes the seating portion and a rim portion provided along the rim of the seating portion, and the seating portion is concave downwardly from the rim portion. A wireless power charging device is provided.

The antenna according to any one of claims 1 to 3, wherein when the seating portion is recessed on the upper surface of the first base, the convex portion is convexly protruded at a position opposite to the seating portion of the lower surface of the first base. Thereby providing a power charging device.

 The top surface of the first base includes the seating portion and a rim portion provided along the rim of the seating portion, wherein a plurality of engaging projections are protruded from the rim portion, and the second base is provided on the rim portion And a coupling inserting portion is formed at a position opposite to the coupling protrusion so that the coupling protrusion is inserted in the coupling inserting portion.

The first antenna is configured to include at least one coil for wireless charging, and the second antenna is configured to be wound a plurality of times along the upper surface of the second base for short range wireless communication (NFC) The present invention provides a wireless power charging apparatus having different kinds of antennas.

A first substrate disposed on a lower surface of the first base; A connection part mounted on the first substrate; And a first connector which is located on the upper surface of the first base so as to be electrically connected to the first antenna and the other connector which is electrically connected to the connection unit through the first base. A wireless power charging device having an antenna is provided.

A second substrate disposed between the first base and the first substrate; And a second connector electrically connecting the second antenna and the ground substrate to each other. A wireless power charging apparatus having different types of antennas is also provided.

The first antenna may include a plurality of coils provided in the seating portion, and the coils may include a first coil, a second coil disposed in parallel to one side of the first coil, And a third coil superimposed between the two coils. A wireless power charging apparatus having a heterogeneous antenna is provided.

Since the first antenna is provided on the seating portion of the first base and the second antenna is provided on the rim of the first base, the first antenna and the second antenna are located at the same level, It is not necessary to provide a separate space for providing the second antenna, so that the overall size can be reduced.

Also, the barrier plate is provided between the shield plate and the second antenna, so that the ferrite powder generated in the shield plate is easily prevented from being moved toward the second antenna.

In addition, since the first and second antennas are separated from each other, the interference due to the magnetic field of the first antenna is not affected or minimized, thereby increasing the efficiency of the second antenna.

Also, since the first and second antennas are separated from each other, the interference due to the magnetic field of the second antenna does not affect or minimize the first antenna, thereby securing the reliability of the first antenna.

Also, since the first antenna is provided inside the barrier rib, the barrier rib has an effect of safely protecting the first antenna from an external impact or relaxing the impact.

Also, since the first, second and third coils of the first antenna are configured so that the rim portions adjacent to each other overlap each other, a strong magnetic field as a whole is formed, thereby achieving the effect of fast charging of 15 W class.

In addition, since the seating portion is concave than the rim portion, the upper end of the first antenna does not protrude above the partition wall, so that the height of the partition wall is not required to be higher than necessary, .

The convex portion is protruded downwardly convexly on the lower surface of the first base, so that the first base has a strong supporting strength.

Further, since the engaging and inserting portion of the second base is inserted into the engaging projection of the first base, even if an external impact is applied to the first base or the second base, the second base does not move sideways, There is an effect to be combined.

1 is a view illustrating a conventional wireless power charging apparatus.
FIG. 2 is a schematic view of a wireless power charging apparatus having heterogeneous antennas according to a preferred embodiment of the present invention.
3 is a schematic view illustrating a first base of a wireless power charging apparatus having heterogeneous antennas according to a preferred embodiment of the present invention.
FIG. 4 is a schematic view illustrating a first base of a wireless power charging apparatus having a heterogeneous antenna according to a preferred embodiment of the present invention.
5 is a cross-sectional view taken along line AA 'of FIG.
6 is a schematic view illustrating a state in which a wireless power charging apparatus having different types of antennas according to a preferred embodiment of the present invention is partially disassembled.
FIG. 7 is a schematic view illustrating a state in which a shield plate, a first antenna, and a second base are coupled to a first base of a wireless power charging apparatus having a heterogeneous antenna according to a preferred embodiment of the present invention.
8 is a cross-sectional view taken along line BB 'of FIG.

Hereinafter, a wireless power charging apparatus having a heterogeneous antenna according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a schematic view of a wireless power charging apparatus having heterogeneous antennas according to a preferred embodiment of the present invention. FIG. 3 is a block diagram of a wireless power charging apparatus having a heterogeneous antenna according to a preferred embodiment of the present invention. 1 schematically shows a state in which a base is viewed from above, and FIG. 4 is a view schematically showing a state in which a first base of a wireless power charging apparatus having heterogeneous antennas according to a preferred embodiment of the present invention is viewed from below. to be.

2 to 4, a wireless power charging apparatus 1000 having a heterogeneous antenna according to a preferred embodiment of the present invention is provided in a vehicle for wirelessly charging a portable terminal, for example, A first antenna 200, a shield plate 300, a second base 400, a second antenna 500, a first substrate 600, and a second substrate 700.

The first base 100 is formed of a square or the like and has a seating part 110 formed to be flat so that the first antenna 200 is seated in the center of the upper surface thereof, (Not shown). A partition 130 is protruded between the seating part 110 and the rim 120. The partition 130 is formed in a ring shape along the rim of the seating part 110.

A plurality of engaging protrusions 122 and spacing protrusions 124 protrude from the upper and lower surfaces of the rim 120 along the corners thereof. The engaging protrusions 122 are formed to protrude upward at the four corners of the upper surface of the rim 120 in order to firmly fix the second base 400 to be described later. The spacing protrusions 124 protrude vertically downward from the engaging protrusions 122 on the bottom surface of the rim 120 to support the first substrate 600 and the first base 100, . At this time, the spacing protrusion 124 is formed to protrude downward from the convex portion 112 formed on the lower side of the first base 100 described later. The engaging protrusions 122 and the spacing protrusions 124 may be formed in a circular column shape, for example.

5 is a cross-sectional view taken along the line A-A 'in FIG.

3 to 5, the seating part 110 is formed on the upper surface of the first base 100 so as to be concave downward from the rim 120. The lower end of the first antenna 200 is positioned below the rim 120 and the upper end of the first antenna 200 is positioned below the rim 120. [ The barrier ribs 130 do not protrude above the barrier ribs 130 and the height of the barrier ribs 130 is not required to be higher than necessary.

Meanwhile, since the seating part 110 is concave on the upper surface of the first base 100, the thickness of the first base 100 may be reduced, and the supporting strength may be weakened. Accordingly, the present invention further includes a convex portion 112 on the lower surface of the first base 100 to improve the supporting strength of the first base 100. The convex portion 112 is formed to be convex downward at a position opposed to the seating portion 110 of the lower surface of the first base 100. Since the convex portion 112 protrudes downward on the lower surface of the first base 100 as described above, the first base 100 has a strong supporting strength.

FIG. 6 is a schematic view illustrating a partially disassembled state of a wireless power charging apparatus having a heterogeneous antenna according to a preferred embodiment of the present invention. FIG. 7 is a block diagram of a wireless power charging apparatus having heterogeneous antennas according to a preferred embodiment of the present invention. A first antenna, and a second base are coupled to a first base of the power charging device.

6 and 7, the shield plate 300 and the first antenna 200 are sequentially disposed on the seating portion 110 of the first base 100 with respect to the first base 100, A second base 400 having a second antenna 500 formed on a rim 120 of the first base 100 is disposed. The second substrate 700 and the first substrate 600 are sequentially disposed under the first base 100.

The first antenna 200 has a frequency band to provide wireless power to a portable terminal such as a cellular phone, a PDA, and a multimedia device in a non-contact manner. For example, the first antenna 200 includes a first coil 210, a first coil 210, A second coil 220 disposed on one side of the first coil 210 and a third coil 230 laid between the adjacent sides of the first coil 210 and the second coil 220. The first, second, and third coils 110, 120, and 130 are wound several times in a circular shape, an ellipse shape, a quadrangle shape, a spiral shape, or the like. In order to secure a sufficient coil length or inductance, I never do that. The first, second, and third coils 110, 120, and 130 are mounted on the seating portion 110 of the first base 100. The first, second and third coils 110, 120 and 130 have first, second and third terminals 112, 122 and 132, respectively. Since the first, second, and third coils 110, 120, and 130 are configured such that the edges of relatively weak magnetic fields are overlapped with each other, a strong magnetic field is generally formed, In addition, when the wireless power charging apparatus 1000 of the present invention is installed in a vehicle, the battery of the portable terminal can be wirelessly charged at a significantly faster speed than a conventional wireless power charging apparatus of only about 5 W.

The shield plate 300 is positioned between the first base 100 and the first antenna 200 in a state of being seated in the seating part 110. The shield plate 300 is a general structure for preventing the inductance of the first antenna 200 from being reduced by the first substrate 600 or various elements. The shield plate 300 may be made of, for example, a ferrite sheet.

The second base 400 is formed in a ring shape along the rim 120 of the first base 100 and an exposure hole 402 is formed at the center thereof to expose the seating portion 110. The second base 400 is disposed on the rim 120 and the shield plate 300 and the first antenna 200 are seated on the seating part 110 through the exposure hole 402. When the second base 400 is disposed on the rim 120, the engaging insertion portion 404 is inserted into the engaging protrusion 122 at a position opposite to the engaging protrusion 122 of the second base 400, Respectively. When the second base 400 is disposed on the first base 100, the engaging insertion portion 404 of the second base 400 is inserted into the engaging protrusion 122 of the first base 100 The second base 400 is firmly coupled to the first base 100 without being shaken to the left or right even if an external impact is applied to the first base 100 or the second base 400. [

The second antenna 500 has a frequency band different from that of the first antenna 200 to perform near field communication (NFC), for example, And can be mounted on the second base 400 or printed. Meanwhile, NFC is a non-contact type short-range wireless communication module that uses the frequency band of 13.56 MHz as one of RFID tags. NFC is widely used in the supermarket for transmission of goods information, travel information for visitors, locking of access control, mobile payment, and file transfer between terminal and various devices in the file transfer system.

In addition, since NFC has a relatively short communication distance, the NFC has relatively good security, and an application can be installed in the portable terminal and the vehicle can be controlled by an instruction by the app. In other words, an NFC reader (not shown) for performing communication with a vehicle control device (not shown) installed inside the vehicle is provided outside the vehicle. The NFC reader scans various commands from the portable terminal and transmits the scanned commands to the vehicle control device, The control device can receive the command and control the vehicle door to be locked, unlocked, or started.

Since the second base 400 is provided on the rim portion 120 of the first base 100 and the second antenna 500 is provided on the second base 400, The antenna 500 is located at the same level and does not require a separate space for providing the second antenna 500 on the first base 100. Therefore, have.

The first substrate 600 and the second substrate 700 are formed of, for example, a printed circuit board (PCB). The first substrate 600 is located on the lower surface of the first base 100 , The second substrate 700 is positioned between the first base 100 and the first substrate 600. The first antenna 200 and the first substrate 600 are electrically connected by a first connector 620 and the second antenna 500 and the second substrate 700 are electrically connected by a second connector 710. [ And is electrically connected.

One end of the first connector 620 is electrically connected to the first, second and third terminals 112, 122 and 132 and the other end of the first connector 620 is inserted into the connection portion 610 through the first base 100. The connection part 610 is mounted on the first substrate 600 so that the first antenna 200 is electrically connected to the first substrate 600 by the first connector 620 and the connection part 610. Since the first, second and third terminals 112, 122 and 132 are not directly connected to the connecting portion 610 but are connected to the connecting portion 610 through the first connector 620, The terminals 112, 122 and 132 may not extend in the direction of the first substrate 600, so that deformation of the first, second and third terminals 112, 122 and 132, There is no effect.

One end of the second connector 710 is electrically connected to the second antenna 500 and the other end of the second connector 710 is integrally formed with the second base 400 and the rim 120 and electrically connected to the second board 700 So that the second antenna 500 and the second substrate 700 are electrically connected to each other.

8 is a cross-sectional view taken along the line B-B 'in Fig.

Referring to FIGS. 7 and 8, the shield plate 300 is made of a ferrite sheet. In use, a fine piece of the ferrite sheet is desorbed and the ferrite powder can be blown. However, the ferrite powder is a factor for decreasing the efficiency of the second antenna 500. The barrier ribs 130 may be provided between the shield plate 300 and the second antenna 500 so that the ferrite powder generated from the shield plate 300 may be easily moved toward the second antenna 500 .

Since the partition wall 130 is provided between the first antenna 200 and the second antenna 500, the interference due to the magnetic field of the first antenna 200 does not affect the second antenna 500 or is minimized The efficiency of the second antenna 500 is increased.

In addition, since the first antenna 200 is provided inside the barrier 130, the barrier 130 has the effect of safely protecting the first antenna 200 from an external impact or relaxing the impact.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims. It should be understood that the technical idea belonging to the scope of the claims also belongs to the present invention.

1000: Wireless power charging device with heterogeneous antenna
100: first base 110: seat part
112: convex portion 120: rim portion
122: engaging protrusion 124:
130: barrier rib 200: first antenna
210: first coil 212: first terminal
220: second coil 222: second terminal
230: third coil 232: third terminal
300: shield plate 400: second base
402: Exposed hole 404:
500: second antenna 600: first substrate
610: connection 620: first connector
700: second substrate 710: second connector

Claims (13)

A first antenna having a frequency band;
A first base having a seating part for seating the first antenna on an upper surface thereof;
A second base formed along an upper surface of the first base so as not to overlap with the seating portion; And
And a second antenna formed to be wound along the second base and having a frequency band different from that of the first antenna.
The method according to claim 1,
And a shield plate disposed between the seating portion and the first antenna.
3. The method of claim 2,
Wherein an upper surface of the first base includes the seating portion and a rim portion provided along a rim of the seating portion,
The second base is formed along the rim, and an exposure hole is formed at the center thereof to expose the seating portion,
Wherein the shield plate is seated on the seating portion through the exposure hole, and the first antenna is disposed on an upper surface thereof.
The method of claim 3,
Wherein the first base further comprises a partition wall protruding between the seating part and the rim.
5. The method of claim 4,
Wherein the barrier ribs are formed along the rim of the seating part and protrude upward from the shield plate.
6. The method of claim 5,
Wherein the barrier ribs are formed to protrude upward from the first antenna and the second antenna.
The method according to claim 1,
Wherein an upper surface of the first base includes the seating portion and a rim portion provided along a rim of the seating portion,
Wherein the seating portion is concave downwardly from the rim portion.
8. The method of claim 7,
Wherein the convex portion is convexly protruded at a position opposite to the seating portion of the lower surface of the first base when the seating portion is recessed on the upper surface of the first base. Device.
The method according to claim 1,
Wherein the upper surface of the first base includes the seating portion and a rim portion provided along the rim of the seating portion, wherein a plurality of engaging projections are protruded from the rim portion,
Wherein the second base is disposed at the rim and is formed with an engaging insertion portion for inserting the engaging protrusion at a position opposite to the engaging protrusion.
The method according to claim 1,
Wherein the first antenna is configured to include at least one coil for wireless charging,
Wherein the second antenna is configured to be wound a plurality of times along an upper surface of the second base for short range wireless communication (NFC).
The method according to claim 1,
A first substrate disposed on a bottom surface of the first base;
A connection part mounted on the first substrate; And
And a first connector which is located on the upper surface of the first base so as to be electrically connected to the first antenna and the other connector is electrically connected to the connection unit through the first base, Lt; / RTI >
12. The method of claim 11,
A second substrate disposed between the first base and the first substrate; And
Further comprising a second connector electrically connecting the second antenna and the ground substrate to each other.
The method according to claim 1,
Wherein the first antenna includes a plurality of coils provided in the seating portion,
Wherein the coil includes a first coil, a second coil arranged in parallel to one side of the first coil, and a third coil superimposed between the first coil and the second coil. Gt;

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